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From harvard.edu
Intermediate-mass black holes in globular clusters
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There have been reports of possible detections of intermediate-mass black holes (IMBHs) in globular clusters (GCs). Empirically, there exists a tight correlation between the central supermassive black hole (SMBH) mass and the mean velocity dispersion of elliptical galaxies, 'pseudo-bulges' and...
19h ago
1
From harvard.edu
WASP-47: A Hot Jupiter System with Two Additional Planets Discovered by K2
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Using new data from the K2 mission, we show that WASP-47, a previously known hot Jupiter host, also hosts two additional transiting planets: a Neptune-sized outer planet and a super-Earth inner companion. We measure planetary properties from the K2 light curve and detect transit timing...
22h ago
1
From harvard.edu
Transit Timing Variations for Planets near Eccentricity-type Mean Motion Resonances
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We derive the transit timing variations (TTVs) of two planets near a second-order mean motion resonance (MMR) on nearly circular orbits. We show that the TTVs of each planet are given by sinusoids with a frequency of {{jn}}<SUB>2</SUB>-(j-2){n}<SUB>1</SUB>, where j≥slant 3 is an integer...
21h ago
1
From harvard.edu
Three super-Earths and a possible water world from TESS and ESPRESSO
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Context. Since 2018, the ESPRESSO spectrograph at the VLT has been hunting for planets in the southern skies via the radial velocity (RV) method. One of its goals is to follow up on candidate planets from transit surveys such as the TESS mission, with a particular focus on small planets for...
20h ago
1
From harvard.edu
Applying astronomical solutions and Milanković forcing in the Earth sciences
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Astronomical solutions provide calculated orbital and rotational parameters of solar system bodies based on the dynamics and physics of the solar system. Application of astronomical solutions in the Earth sciences has revolutionized our understanding in at least two areas of active research. (i)...
18h ago